Just a quick note to mention that I upgraded my MBL's firmware to 2.00.35. I then re-installed mysql-server and no-ip client, restored the original mysql data set etc., without any issues. Just follow instructions in "First Steps"(hold udev update, comment out squeeze server, disable php error messaging etc.,))
Obvious note : mysql data will be wiped out when upgrading the firmware so make sure you do a backup. what I usually do is to "cp -a /var/lib/mysql /shares/Public/mysql" to backup the entire mysql data (this includes user setting, password setting etc.,) and then restore the entire folder tree to its original location after re-installing the server.